Will Falconer, DVM Moderator
Yes, quite amazing, isn't it, Michelle? There is some really good certification training out there for both vets and chiropractors, a year long training put out by the AVCA. They require passing an exam, keeping up with continuing education to stay certified, etc.
Doctors who've trained with them are here: http://www.avcadoctors.com
Texas recently tried to more strictly control chiropractic on animals, and, after looking at the burden of evidence, decided it wasn't worth their time. But, each state has to decide this, so it's likely a mixed bag.
I'd trust anyone trained this way. Those who've taken a long weekend of training and set out manipulating spines? Not so much.